A 123,000 MPH nuclear rocket could reach Mars in only one month instead of seven

https://interestingengineering.com/a-123000-mph-nuclear-rocket-could-reach-mars-in-only-one-month

Plasma is superheated. Strong magnetic fields then channel the hot gas out of the back of the engine... 197,950 km/h. top speed. Conventional rockets expend their entire fuel supply in a single controlled explosion during launch. By contrast, this sustains propulsion throughout journey. Accelerates gradually until reaches max speed of 54 km/s by twenty-third day, 4X faster than existing chemical rockets. Delicate course changes are easy since plasma engine can activate whenever.